IPTraf is a Linux app for looking at network traffic.
To install.
ubuntu:~$ sudo apt-get install iptraf
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following packages were automatically installed and are no longer required:
linux-headers-2.6.35-22 linux-headers-2.6.35-22-generic
Use ‘apt-get autoremove’ to remove them.
The following NEW packages will be installed:
iptraf
0 upgraded, 1 newly installed, 0 to remove and 15 not upgraded.
Need to get 165kB of archives.
After this operation, 745kB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu/ maverick/main iptraf i386 3.0.0-7 [165kB]
Fetched 165kB in 1s (135kB/s)
Selecting previously deselected package iptraf.
(Reading database … 216593 files and directories currently installed.)
Unpacking iptraf (from …/iptraf_3.0.0-7_i386.deb) …
Processing triggers for doc-base …
Processing 1 added doc-base file(s)…
Registering documents with scrollkeeper…
Processing triggers for man-db …
Setting up iptraf (3.0.0-7) …
to run
ubuntu:~$ sudo iptraf